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    std::unique_ptr::swap

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    <metanoindex/>

     
    C++
     
    Utilità libreria
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    Gli operatori relazionali
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    rel_ops::operator!=
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    pair
    tuple(C++11)
    piecewise_construct_t(C++11)
    piecewise_construct(C++11)
    Swap, in avanti e spostare
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    Swap, forward and move
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    swap
    forward(C++11)
    move(C++11)
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    declval(C++11)
     
    Gestione della memoria dinamica
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    allocator
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    uninitialized_copy
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    unique_ptr(C++11)
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    weak_ptr(C++11)
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    std :: unique_ptr
    Membri funzioni
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    unique_ptr::unique_ptr
    unique_ptr::~unique_ptr
    unique_ptr::operator=
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    unique_ptr::release
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    unique_ptr::get
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    unique_ptr::operator bool
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    unique_ptr::operator[]
    Non membri funzioni
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    operator==
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    std::swap
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    <tbody> </tbody>
    void swap(unique_ptr& other);
    		 (dal C++11)
    Swap gli oggetti gestiti e deleters associati con un altro oggetto unique_ptr other.
    Original:
    Swaps the managed objects and associated deleters with another unique_ptr object other.
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    Parametri

    other -
    un altro oggetto unique_ptr di scambiare l'oggetto gestito e il deleter con
    Original:
    another unique_ptr object to swap the managed object and the deleter with
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    Valore di ritorno

    (Nessuno)
    Original:
    (none)
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    Eccezioni

    noexcept specification:  
    <tbody> </tbody>
    noexcept
      (dal C++11)

    Esempio

    #include <iostream>
#include <memory>

struct Foo {
    Foo(int _val) : val(_val) { std::cout << "Foo...\n"; }
    ~Foo() { std::cout << "~Foo...\n"; }
    int val;
};

int main()
{
    std::unique_ptr<Foo> up1(new Foo(1));
    std::unique_ptr<Foo> up2(new Foo(2));

    up1.swap(up2);

    std::cout << "up1->val:" << up1->val << std::endl;
    std::cout << "up2->val:" << up2->val << std::endl;
}

    Output: 

    Foo...
Foo...
up1->val:2
up2->val:1
~Foo...
~Foo...